Fragment shadow: generating fragmented shadows with multi-projectors geometry and color calibration

ABSTRACT

We demonstrate Fragment Shadow a multi-projector system to generate visual transformed optical shadows without any latency. In our system, multiple projectors output different individual images onto the same surface to display one synthesized image. When the human body or objects occlude some of projectors, it reveals images from other projectors. Fragment Shadow enables the image synthesis pipeline in XYZ color space by the bi-directional conversion of RGB and XYZ color space and the correction of un-uniformity of projectors in addition to the geometry calibration between multiple projectors. Our optical shadow can be visually transformed with various expressions, such as geometrically fragments, textured shadow in the completely different visual and even putting our shadows in between the multiple layers of projection images. We envision the visual transformation of own optical shadow can provide unique sensations to our own bodies.

References

1. H. Kato, T. Naemura, and H. Harashima. Textured shadow. In Proceedings of the 2Nd IEEE/ACM International Symposium on Mixed and Augmented Reality, ISMAR '03, pages 352-, Washington, DC, USA, 2003. IEEE Computer Society. ISBN 0-7695-2006-5. URL http://dl.acm.org/citation.cfm?id=946248.946829.
2. Y. Minomo, Y. Kakehi, M. Iida, and T. Naemura. Transforming your shadow into colorful visual media: Multiprojection of complementary colors. Comput. Entertain., 4(3), July 2006. ISSN 1544-3574.

Index Terms

• Human-centered computing

  • Human computer interaction (HCI)

    • Interaction paradigms

      • Mixed / augmented reality